<?php

/**
 *    Copyright (C) 2025 Cedrik Pischem
 *
 *    All rights reserved.
 *
 *    Redistribution and use in source and binary forms, with or without
 *    modification, are permitted provided that the following conditions are met:
 *
 *    1. Redistributions of source code must retain the above copyright notice,
 *       this list of conditions and the following disclaimer.
 *
 *    2. Redistributions in binary form must reproduce the above copyright
 *       notice, this list of conditions and the following disclaimer in the
 *       documentation and/or other materials provided with the distribution.
 *
 *    THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
 *    INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
 *    AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
 *    AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
 *    OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 *    SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 *    INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 *    CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 *    ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 *    POSSIBILITY OF SUCH DAMAGE.
 *
 */

namespace OPNsense\NdpProxy;

use OPNsense\Base\BaseModel;
use OPNsense\Base\Messages\Message;

class NdpProxy extends BaseModel
{
    private function checkConfiguration($messages)
    {
        if ($this->general->enabled->isEqual('1')) {
            foreach (['upstream', 'downstream'] as $field) {
                if ($this->general->$field->isEmpty()) {
                    $messages->appendMessage(new Message(
                        gettext('Interface is required.'),
                        "general.$field"
                    ));
                }
            }

            $upstream = $this->general->upstream->getValue();
            $downstreamList = array_filter(explode(',', $this->general->downstream->getValue()));

            if (!empty($upstream) && in_array($upstream, $downstreamList, true)) {
                $messages->appendMessage(new Message(
                    gettext('Downstream interfaces cannot contain upstream interface.'),
                    'general.downstream'
                ));
            }
        }
    }

    public function performValidation($validateFullModel = false)
    {
        $messages = parent::performValidation($validateFullModel);
        $this->checkConfiguration($messages);
        return $messages;
    }
}
